VERSATILE MARKER WRITES SMOOTHLY AND LEGIBLY ON BOTH POROUS AND NONPOROUS MATERIALS SUCH AS PORCELAIN GLASS METAL AND PLASTIC. MOISTURE-AND FADE FORMULA. PAPER WRAPPED - JUST PULL STRING AND PEEL DOWN STRIP TO REFRESH TIP. ERASABLE WITH A DAMP CLOTH. SOLD IN CARTON QUANTITIES OF 12 PRICED EACH.